<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>{% block title %}{% endblock %}-发布平台</title>
    <link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
    <script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
    <script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
{#加入CSS文件#}
    <link rel="stylesheet" href="{{ url_for('static', filename='css/base.css')}}">

    {% block head %}{% endblock %}
</head>
<body>
 <nav class="navbar navbar-default">
  <div class="container-fluid">
    <!-- Brand and toggle get grouped for better mobile display -->
    <div class="navbar-header">
      <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">
        <span class="sr-only">Toggle navigation</span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
        <span class="icon-bar"></span>
      </button>
      <a class="navbar-brand" href="#">随风而去</a>
    </div>

    <!-- Collect the nav links, forms, and other content for toggling -->
    <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
      <ul class="nav navbar-nav">
        <li class="active"><a href="#">首页 <span class="sr-only">(current)</span></a></li>
        <li><a href="#">发布文章</a></li>
      </ul>
      <form class="navbar-form navbar-left">
        <div class="form-group">
          <input type="text" class="form-control" placeholder="请输入关键字">
        </div>
        <button type="submit" class="btn btn-default">查找</button>
      </form>
      <ul class="nav navbar-nav navbar-right">
          {% if user %}
              {% if user == '' %}
                    <li><a href="{{ url_for('login') }}">登录</a></li>
                    <li><a href="{{ url_for('regist') }}">注册</a></li>
                  {% else %}
                     <li><a href="#">{{ user }}</a></li>
                    <li><a href="{{ url_for('login') }}">注销</a></li>
                  {% endif %}
              {% else %}
                    <li><a href="{{ url_for('login') }}">登录</a></li>
                    <li><a href="{{ url_for('regist') }}">注册</a></li>
          {% endif %}
        </li>
      </ul>
    </div><!-- /.navbar-collapse -->
  </div><!-- /.container-fluid -->
</nav>

{#添加主体block#}
 <div class="main">
{% block main %}{% endblock %}
 </div>

</body>
</html>